Atomizer for fluids.



J. PATTEN.

ATOMIZER FOR FLUIDS.

APPLICATIQN FILED APR.23.1914.

Patented Mar. 20, 1917.

2 SHEETS-SHEET l.

l. PATTEN.

ATOMIZER FOR FLUIDS.

APPLlcATxoN man APR.23,1914.

Patented Mar. 20, 1917.

2 SHEETS-SHEET 2.

UNITED s'rATEs PA JOHN- IPATTEN, OF BALTIMORE, MARYLAND, ASSIGNOR TO DAVISON CHEMICAL i omen.

- COMPANY, or BALJTIMORE, ivrAMRYLAiTD,l A conroaATIoN'oF MARYLAND.

, ATOMIZER FOR FLD-1Ds.

into intimate contact with gases. It is, however, generally applicable wherever it is desired to subdivide a liquid into minute particles. The invention will be more particularly 'described in connection with the aci companying drawing, in which-v Figure 1 is a side elevationpartly insection of an atomizing device embodying my inventionincluding a motor foi` driving the .r

same;

Fig. 2 is a sectional view on the line 2-2`, Figs. 1 and 3, on a somewhat larger scale than Fig. 1; and e Fig. 3 is an enlargement of a portion of Fig. 1, showing the atomizer in greater de,- tail.

rotatable disk which is mounted on a vertical shaft 11, being securely locked thereon. The -disk '10 is preferably dished orf concave on its upper side. Just above the disk is a -fluid supply chamber 12 which discharges through an annular opening 13 onto the disk near the axis thereof.. The supply chamber 12 is preferably of' inverted conical form and thefluid is preferably injected into said chamber tangentially, as by the nozzles 14 whichl receive fluid through openings 15 in thebottom of va small tank 16. The tank is supplied continuously, when the apparatus being effected as shown by means of a hand wheel 23 operating on a threaded rod 24 which engages the collar 25 on the hub of Specification of Letters Patent. v

Referring to the drawings, 10 indicates a Patented Mar. 2o, i917.

Application filed April 23, 1914. Serial No. 833,936.l

the friction wheel 22. The friction wheel- 22 slides on and .turns with a shaft 26 which, as shown, 1s driven by an electric motor 27.

In the particular adaptation of my inven tion illustrated in the drawings, itis used for spraying acid within a lead chamber. The bearings for the shafts 11` and 26 are supported on a cast frame 28 and this frame 1s carried by a base plate 29, which also supports the motor. The base 29 is carried on suitable supporting beams 30 and the top 31 of the chamber in which the atomizer works, which isv of dead, is supported from the beams 30 by s'uitableghangers 32. In the lead top plate 31 there is a circular opening 33 through which the atomizing disk lOmay be withdrawn and in the base plate 29, there is a circular opening 34 through which the disk and its' supporting shaft and bearings and other connected-parts may be withdrawn. VSurrounding the opening 33 is a lute 35 which seals the chamber below the top plate 31 against communication with the atmosphere. Surrounding the bearing 18 is iron. On account of the high speed at which l the disk is rotatedfit must be securely connected to the shaft and as one means of making such connection, I have shown the shaft tapered slightly at its lower end and fitting a corresponding opening in a hub or sleeve 37, the shaft being drawn tightly into the sleeve by a nut 38. The sleeve 37 is evtended upwardly from the Adisk and protects the shaft against corrosive action when atomizing acids or other'chemicals. The disk and hub should of course be made of metal which will not be affected by the fluids passing 'over them. l

The operation of the described atomizer is as follows: The shaft 1-1 which carries the atomizing disk is rotated at high speed,

' preferably several thousand revolutions per 'minute The acid or other fluid to be atomized is fed continuously through the pipe 17 into the tank compartment 16, and is stream ofv uniform thickness at the mouth 13 of the supply chamber onto the inner part of the upper face of the disk l0. The

mouth 13 is of course concentricy with the disk l0 and the fluid is therefore supplied evenly around thev disk. .The rotation `of the disk causes the fluid to travel `out-ward to the periphery and it reaches the periphery in the form of a thin film which breaks up on leaving the disk into minute particles causing the liquid to take the form of mist which floats in a cloud in the chamber in which the atoinizer is located land settles slowly. I have found that by making the upper surface of the diskdis'lied or concave, that the film of fluid is sprayed more uniformly and dissipated more effectively than when the disk is a plane, although the latter form of disk will operate quite satisfactorily. T he rapidly rotating disk creates certain currents in the air or gas in lwhich it is operating which tends to distribute the atomized Huid throughout the area of the chamber in which the disk is operating. That is, the disk carries with it a certain amount of air or gas which is thrown Aoutward by centrifugal force and which is replaced by air or gas coming from beneath and from above the disk. The circulation thus created causes the atomiZed particles of fluid to be distributed `horizontally throughout the chamber in which the atomizer is operating, including the space beneath the atomizer.

Having thus described my invention, what I claini and desire to secure by Letters Patent, is:

l. In an atomizer, the combination of a,

. disk rotatable about a vertical axis, means for rotating the disk, a supply chamber above and discharging fiuid in an annular stream onto the top ofthe disk, and means whereby the fluid is admitted'fto said supply chainber tangentially so as to rotate andl f distribute the fluid in the supply chamber.

2. In an atomizer, the combination with a disk rotatable upon a vertical axis, of a supply chamber above and concentric with the disk, said supply-chamber having an y inverted conical 'bottom and an annular out-.

W3. Means for atomizing fluid in a tank or vessel comprising a top for ,said vessel having an opening therein, a vertical shaft extending throughrthe opening, a disk on said' shaft belowithe opening, means for rotating said shaft and the disk thereon, a chamber for receiving fiuid and for discharging the" sainey onto said disk, the walls of said chamber 4being extended upward through the opening, and mean-s for sealing said open ing, substantially as described.y

4. The combination with a ing therein, of anv atomizing mechanism tank or vessel provided with a top wall having an open'- comprising a shaft extending downthrough said opening, a diskon the part of said shaft within 'the tank, means outside .,the tank, for rotating saidshaft and the disk thereon,f. vmeans for supplying fluid to thel upper side of said rotatable disk, and means for sealing the opening in the top wall'of said tank.

5. The combination with a tank or vessel provided with a top wall having .anopening therein, of an atomizing mechanism comprising a shaft extending down through said opening, a disk on the part of said shaft within the tank,means 'outside the tank for rotating said shaft and the disk thereon, means for varying the speed of said disk, means for supplying an annular stream of fluid to the upper side of said rotatable disk, and means for sealing the opening in the top wall of said tank. p

In testimony whereof yI affix my signature in presence of two witnesses.

' OHN PATTEN.

Witnesses: u' f RALPH C. SHARRETTS,

J. lI-RVING. CLARK. 

